| article html file updated | 6 February 2020 08:32 CET | Update | https://www.mdpi.com/2072-6643/6/4/1442 |
| article html file updated | 7 May 2019 16:02 CEST | Update | - |
| article html file updated | 21 March 2019 15:21 CET | Update | - |
| article html file updated | 20 August 2015 02:55 CEST | Update | - |
| article html file updated | 12 May 2014 15:29 CEST | Original file | - |
| article xml file uploaded | 12 May 2014 15:29 CEST | Original file | https://www.mdpi.com/2072-6643/6/4/1442/xml |
| article pdf uploaded. | 10 April 2014 14:50 CEST | Version of Record | https://www.mdpi.com/2072-6643/6/4/1442/pdf |
